Complexity is a term that not only defies any disciplined usage in our usual discourse, but also lacks a rigorous definition even in academic circles. It is often confused with complicatedness and is popularly invoked whenever we see many parts arranged in intricate relationships and interacting in hard-to-predict ways. In …

In model-based systems engineering, we tend to focus on requirements and design, but how many MBSE implementations consider aligning design with verification and validation (V&V)? The Vitech systems metamodel is especially capable of supporting V&V activities throughout the development lifecycle on either side of the “V.” Let’s take a look. …

We talk a lot about “modeling language” in the world of systems engineering. That phrase gets used in a variety of ways with different meanings. It is the focus of discussions of standards. And yet, the variety of the usage of “modeling language” has some deleterious effects on the understanding …

When engineers speak about model-based systems engineering, or MBSE, the term “model” is used in many ways. Unfortunately, this only creates confusion between systems engineers, modeling and simulation engineers, and detail engineers. We all use models, so does this mean we’re now model-based? No. Remember that MBSE was devised as …